Nipple and clamp for pipes.



G. E. MAXPIELD. NIPPLE AND CLAMP FOR PIPES.

' APPLIUATION FILED JULY 16, 1907. 961,247.

Patgntad June 14, 1910.

UNITED STATES PATENT OFFIQE.

CHARLES E. MAXFIELD, 0F CLEVELAND, OHIO, ASSIGNOR OF TWO-FIFTHS TOEGBERT F. HAMMOND, 0F CLEVELAND, OHIO.

NIPPLE AND GLAM? FOR PIPES.

Specification of Letters Patent.

Application filed July 16, 1907.

Patented June 14, 1910.

Serial No. 384,019.

To all whom it may concern:

Be it known that 1, CHARLES E. MAXFIELD, a citizen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented a certain new and useful Improvement in Nipples and Clamps forPipes, of which the following is a full, clear, and exact description,reference being had to the accompanying drawings.

This invention relates to nipples and clamps for hose and other pipesformed of compressible material, and has for its object the productionof a device of this character which is simple and economical inconstruction, which is convenient in application and which forms apositive clamp between the nipple and a pipe that is to be clampedthereto, said pipe being clamped to the nipple by a member with anangularly shaped portion which compresses the pipe against the nippleand thereby prevents all possible leakage between the pipe and nipple.

Referring to the drawings forming a part hereof, Figure l is asectional, longitudinal view taken through the nipple and clamp and alsothrough the pipe, and Fig. 2 is a perspective view of the nipple andclamp, the compressing ring or member being removed from its thimble.

Taking up a more detailed description of the invention by reference tothe drawings, in which the same reference character designates the samepart throughout the several views, 1 represents a portion of a tank .orboiler to which the nipple 2 is adapted to be secured in any suitableway, as by screwing into a threaded hole in said tank or boiler, asshown. This nipple is preferably of uniform diameter throughout themajor portion of its length, but near its outer end it is expanded atsubstantially right angles so as to form a shoulder 3, beyond which thenipple gradually tapers to a comparatively thin edge, the taperedportion being shown at i. The pipe or tube which is shown at 5 may be anordinary hose pipe or may be formed of any compressible material such,for example, as lead. This pipe is forced over the tapered portion 4i ofthe nipple, and is clamped thereto by aring member 6, said member havingits sides preferably inclined toward the center of the ring so that theinterior of the ring is narrower than the exterior. The outer perimeterof this ring is screw threaded, as shown at 7, to adapt it to be screwedinto an exterior sleeve or thimble 8. This thimble has an inwardlyturned flange 9 with an opening therethrough fitting the nipple 2 beyondthe shoulder 3, against which shoulder said flange engages. The thimbleis screw threaded on its interior at 10, the threads fitting the threads7 on the ring member 6.

In applying my invention, the nipple 2 is first passed through theopening in the thimble and the nipple is then screwed to the tank orcylinder 1. The ring member is then slipped over the tube or pipe andthe latter is then forced over the tapered end i of the nipple. The ringmember 7 and the thimble are then brought into threaded engagement,whereupon, by turning the latter in the proper direction, the ring isscrewed into the thimble, which compresses the end of the pipe againstthe tapered face of the nipple. Owing to said tapered face, the fartherthe ring is screwed into the thimble, the greater will become thecompression of the pipe, and in this manner a tight joint can be formedwhich will prevent all leakage.

Owing to the angular form of the compressing surface of the ring (3, thetube or pipe 5 is abruptly compressed, and a tighter and more efiicientjoint can be formed than would be the case were the engaging surface ofsaid ring formed on an incline substantially parallel with the taperedface of the nipple. Furthermore, this angular engaging surface is muchmore etlicient in its adherence to the pipe and, for this reason, thering will not turn upon the pipe during compression and no wrench forturning or holding such ring is necessary. Also, 0wing to said angularshape of the compression ring and the consequent abrupt compression ofthe pipe, no wrench is usually necessary for turning the thimblesufficicntly for securing a tight joint. If a wrench is found necessaryat any time, an ordinary pipe wrench may be used, or the thimble may beprovided with a polygonally shaped exterior to adapt it to the use ofthe ordinary monkey wrench.

I claim,

In a device of the character described, a nipple having an exteriorshoulder and a tapered portion in front of such shoulder, said taperedportion being adapted to receive a tube or pipe, an internally threadedthimble surrounding the nipple and having a pro jecting flange adaptedto engage with the shoulder upon the nipple and space the body portionof the thimble from the nipple, a ring having tapered sides, theexterior surface of said ring being wider than the interior surfacethereof, the exterior surface being provided with screw threads adaptedto engage with the threads on the interior of the thimble, the interiorsurface of said ring being substantially straight, whereby an angularportion is presented to the pipe or tube which engages the taperedportion on the nipple, said ring being adapted to be drawn 15 in againstthe pipe as the thimble is turned to press against the pipe and form atight joint substantially as described.

In testimony whereof, I hereunto aflix my signature in the presence oftwo witnesses. CHARLES E. MAXFIELD. Witnesses:

S. E. FoU'rs, BRENNAN B. WEST.

